<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>事件的修饰符</title>
        <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
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        <script src="vue.js"></script>
    </head>
    <body>
        <div class="app"></div>


        <script>
        
            var vm = new Vue({
                el:'.app',
                data:{
                    message:'hello world'
                },
                methods:{
                    
                }
            });
        
        </script>
    </body>
</html>